Final answer:
The ribosome is the organelle that does not have a membrane.
Step-by-step explanation:
Ribosomes are cellular structures responsible for protein synthesis in both prokaryotic and eukaryotic cells. They serve as the site where the information encoded in messenger RNA (mRNA) is used to assemble proteins from amino acids during the process of translation. Ribosomes play a fundamental role in the synthesis of proteins, which are essential for the structure and function of cells.
The ribosome is the organelle that does not have a membrane. A ribosome is a complex molecular machine found in both prokaryotic and eukaryotic cells that is responsible for protein synthesis. It consists of two subunits made up of ribosomal RNA (rRNA) and proteins, and is located in the cytoplasm or attached to the rough endoplasmic reticulum.